I've just got hold of an Edtiske LCX-ZJ1200-03, that looks like it's manufactured by Shenzhen Lingchuangxun Technology:
I can't seem to find any information about the hardware/chipset. Is there any way I can find out what it is and if I can install OpenWrt on it?
I'd return it.
Open it up.
You can't, at least not at the moment.
You may be able to now, I'm researching a similar no-name WiFi repeater LCX LCX-ZJ1200-03 that recently (earlier this year, in 01/2026) had an update to OpenWRT:
Good luck!
Did you notice that email's almost 1.5 yo, and the device's still unsupported?